It is also compared that the brāhmin is the head of the Supreme Personality of Godhead, the virāṭ-puruṣa. So brāhmins business is, because it is the head, to give direction to the society, to the spiritual society, daiva-varṇāśrama, how to conduct the life and occupation of the society.
That is brāhmins business. The kṣatriya's business is to give protection to the society. And the vaiśya's business is to give food, productive. Kṛṣi-go-rakṣya-vāṇijyaṁ vaiśya-karma svabhāva-jam (BG 18.44). In this way there is a cooperative system, taking as part and parcel of the supreme body. Mamaivāṁśo jīva-bhūtaḥ (BG 15.7).
So we should cooperate, but there must be these four classes of men. Not that simply śūdras and vaiśyas. At the present moment, there are few vaiśyas and mostly śūdras. Rajas-tamo-bhāvāḥ (SB 1.2.19). Rajas-tamaḥ, by the rajo-guṇa, the kṣatriya are produced, and by tamo-guṇa the vaiśyas are produced, and vaiśyas are mixed up, rajo-guṇa and tamo-guṇa. So it doesn't matter in whatever guṇa or status of life we are. If all of us take to Kṛṣṇa consciousness, then our life is successful, mutual cooperation. Therefore Kṛṣṇa says, manuṣyāṇāṁ sahasreṣu kaścid yatati siddhaye (BG 7.3).
Now, how to make perfect, perfection of life, siddhi? That is stated in the Caitanya-caritāmṛta:
- anādi-bahirmukha jīva kṛṣṇa bhuli' gelā
- ataeva kṛṣṇa veda-purāṇa kailā
- (CC Madhya 20.117)
Because we have all forgotten Kṛṣṇa. That is our miserable condition of life. We are all forgotten about Kṛṣṇa. Therefore Kṛṣṇa is teaching us personally. Five thousand years ago, He personally appeared and teaching us, we forgetful of Kṛṣṇa, the whole human society. Kṛṣṇa is teaching everyone. Don't think that Kṛṣṇa is teaching only in India, and to the brāhmins or the Hindus.